mirror of
https://github.com/daniviga/django-ram.git
synced 2025-08-04 21:27:49 +02:00
Daniele Viganò
5d536ce568
* Add decoder documents support * Use abstract model for Documents * Increase version * Code cleanup
60 lines
1.7 KiB
Python
60 lines
1.7 KiB
Python
import os
|
|
import hashlib
|
|
import subprocess
|
|
|
|
from django.utils.html import format_html
|
|
from django.utils.text import slugify as django_slugify
|
|
from django.core.files.storage import FileSystemStorage
|
|
|
|
|
|
class DeduplicatedStorage(FileSystemStorage):
|
|
"""
|
|
A derived FileSystemStorage class that compares already existing files
|
|
(with the same name) with new uploaded ones and stores new file only if
|
|
sha256 hash on is content is different
|
|
"""
|
|
|
|
def save(self, name, content, max_length=None):
|
|
if super().exists(name):
|
|
new = hashlib.sha256(content.read()).hexdigest()
|
|
with open(super().path(name), "rb") as file:
|
|
file_binary = file.read()
|
|
old = hashlib.sha256(file_binary).hexdigest()
|
|
if old == new:
|
|
return name
|
|
|
|
return super().save(name, content, max_length)
|
|
|
|
|
|
def git_suffix(fname):
|
|
"""
|
|
:returns: `<short git hash>` if Git repository found
|
|
"""
|
|
try:
|
|
gh = subprocess.check_output(
|
|
["git", "rev-parse", "--short", "HEAD"],
|
|
stderr=open(os.devnull, "w"),
|
|
).strip()
|
|
gh = "-git" + gh.decode() if gh else ""
|
|
except Exception:
|
|
# trapping everything on purpose; git may not be installed or it
|
|
# may not work properly
|
|
gh = ""
|
|
|
|
return gh
|
|
|
|
|
|
def get_image_preview(url):
|
|
return format_html(
|
|
'<img src="%s" style="max-width: 150px; max-height: 150px;'
|
|
'background-color: #eee;" />' % url
|
|
)
|
|
|
|
|
|
def slugify(string, custom_separator=None):
|
|
# Make slug 'flat', both '-' and '_' are replaced with '-'
|
|
string = django_slugify(string).replace("_", "-")
|
|
if custom_separator is not None:
|
|
string = string.replace("-", custom_separator)
|
|
return string
|